| TYPE | Theor./Math. Physics Seminar |
| Speaker: | Yuval Gefen |
| Affiliation: | Weizmann |
| Organizer: | Shmuel Fishman |
| Date: | 14.06.2015 |
| Time: | 14:30 - 15:30 |
| Location: | Lewiner Seminar Room (412) |
| Abstract: | Reconstruction of edges of fractional quantum Hall systems (due to interactions and disorder) may lead to the emergence of neutral modes. The latter are ubiquitous in FQHE. A seemingly unrelated fact is the failure to observe Aharonov-Bohm oscillations in interferometers (Mach-Zehnder and Fabry-Perot) operating in the FQHE regime. Are these two facts related? I will describe how neutral modes and fractionalization of electrons into eigen edge-components conspire to undermine coherency. I will discuss how one may overcome this adverse effect. |